Separator for metal and wood sawdust



' L'mmm S. J. KELLEY.

SEPARATOR FOR METAL AND WOOD SAWDUST.

APPLICATION FILE-D APR. 14. I919.

Patented Apr. 26, 1921.,

illlllli gVENTOR ATTORNEY carts Application filed April 14 1919. Serial No. 290,036.

arating the metal particles from the wood sawdust, which is produced by the cutting of electrotype blocks in electrotype foundries. It is generally known that from this operation a resultant dust formed of this particles of electrotype metal and wood results and is collected upon the floor or other place of deposit. This floor dust contains a large amount of electrotype metal, which should be remelted with the least amount of dross, and other foreign substances, as possible. The object of my invention is to provide a light compact portable means for separating the particles of electrotype metal from the other sediment, and collect and leave the metal in a convenient receptacle free from impurities. By the light compact form of my device, it is easily carried to any part of the building, and is adapted to varied forms of surfaces, for operation, and is portable for shipment from place to place, and constructed at little expense. With these objects in view, my invention consists of certain novel features of construction and arrangement of parts as will be hereinafter fully described and pointed out in the claims, reference being bad to the accompanying drawings: in which Figure 1 is a perspective View of one form of construction of my device. Fig. 2 is a perspective view of a fragmentary part of my device, Fig. 3 is a perspective view of a fragmentary part of a preferred form of my device.

In carrying out my invention in the drawing, E is a metal chamber closed at the top and open at the bottom. It is surrounded by a cone shaped base support H mounted thereon. In the preferred form of my device l have mounted on the top of chamber E, a pan AA, from the bottom of which I have connected and projecting the funnel shaped mouth A, from the base of which extends the tube B opening into tube C. This form of hopper enables the floor sweepings to be collected and placed in my device, and there gradually fed into the funnel mouth A, from the pan surface AA, by hand manipulation or otherwise; and thus the operator is able to have a more perfect and complete Specification of Letters Patent. Patenfgd Apr, 26' 1921 action of the air, upon the particles in separating the lighter dust, without tube B becomlng clogged, or having so great a compact mass of dust, as to cause much of the a metal to be swept away in the process of cleanlng. The tube 0 is semi-circular in form havlng a flat bottom, to enable a greater spread of the particles, resting upon the bottom; the tube C has the inner end projecting into the interior of chamber E,

and is on an incline outward and downward from chamber E; Attached, in one form of my device, to the outside of E at the top, I have the hopper A from the bottom of which extends the tube 13 opening into tube C. Removably attached in any convenient manner and opening into the interior of the tube C, i have the flexible tube 1), adapted to connect, under valve control, with any convenient source of compressed air supply, and adapted to pro ecta blast of air up tube C.

' My device as it can be seen, can be mounted on any level surface, such as abox, table or floor havnig an opening therein, and can be permanently or removably mounted thereon, and through which extends the lower end of chamber E; preferably 1 have the portable casing containing a sliding drawer F, the topof which casing has an opening-therein, into which the end of chamber E may project; the cone shaped support, may as before stated, be removably or firmly attached to the surface of the casing or other support surface.

in the operation of my device, the floor sweepings containing the saw dust of metal and wood particles are swept, collected and poured into the hopper AA or A; they are gradually moved into the funnel shaped opening A, by hand manipulation in gradual quantity and they descend and pass down tube .6, and fall upon the inclined fiat surface of tube C, thus spreading out on said surface and allowing the air blast to pass freely over and through the particles of metal, and the mass of particles being carried down the tube by gravity, the parti clesofwood dust struck by the blast of air which 1 project up tube C, are blown up the incline of tube C from tube D, in the upper end, falling into chamber E and there pass down into the drawer F, or other place of deposit beneath chamber E; while the metal particles, by the action of gravity pass down the slope of the fiat surface of tube C and out into the receiver G Thus the metal Having thus described my invention what I claim as new, and for which I desire Letters Patent is as follows:

l.' In a separator, a receiving chamber, a V

receptacle with which the receiving chamber communicates, an inclined conduit communicating with the receiving chamber at its upper end, with its lower end open to serve as a discharge, a valve controlled air blast means projecting into the inclined conduit intermediate its ends and a hopper communicating with the inclined tube below its upper end.

2. The combination with a receiving chamber, a receptacle below the receiving chamber, a supply hopper mounted on said chamber, an inclined fiat surfaced tube extending from within the receiving chamber outward, a tubular connection between the hopper and inclined tube, means for supplying a blast of air upward within the interior of said inclined tube capable of forcing upward in said tube the particles of dust into said chamber, while gravity conveys the heavier metal particles down the tube into the receiver.

3. The combination with a receiving chamber, a receptacle below the receiving chamber, a pan shaped hopper mounted on said chamber, and having a funnel shaped mouth opening from the bottom thereof, an inclined'flat surfaced tube extending from the receiving chamber outward, a conduit connecting the funnel shaped mouth opening with the upper end of the inclined tube, valve controlled means for supplying a blast of air upwardly within the interior of said inclined tube capable of forcing upward in said tube the particles of dust into said chamber, while gravity conveys the heavier metal particles down the tube into a receiver.

4. In a device of the class described, a receiving chamber, a receptacle below the receiving chamber, a supply hopper mounted on said chamber, an inclined semi-circular conduit having a flat bottom projecting at its upper end into said receiving chamber, a conduit connecting the semi-circular conduit with the supply hopper through which material to be separated is fed from the hopper into the semi-circular conduit, air blast means connected to the lower end of the semi-circular conduit of sufficient pressure to permit heavier particles to fall by gravity down the semi-circular conduit but to force thelighter particles up the semi-circular conduit into the receiving chamber.

In testimony whereof I have aflixed my signature in the resence of two witnesses.

7 SO OMON J. KELLEY.

,Witnesses:

E. J. BURNS, E. M. HOWEY. 

